What was a Japanese-only device has finally made it to the US shores. Sanyo's Eneloop Mobile Booster (aka, KBC-L2) battery supplies 5V 500mA of juice to a pair of simultaneously connected USB devices or 1,000mA to a single, more power-hungry tablet. The 5,000mAH Lithium-ion pack is baked right into the device (rechargeable Eneloop AA owners should check out Sanyo's Mobile Booster stick) and charges fully in about seven hours from an AC circuit or 14 hours from a relatively feeble USB jack. Available now for $79.99.
